53436816 has 60 divisors (see below), whose sum is σ = 157427920. Its totient is φ = 16873920.

The previous prime is 53436781. The next prime is 53436847. The reversal of 53436816 is 61863435.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7030 + ... + 12501.

Almost surely, 2^53436816 is an apocalyptic number.

It is an amenable number.

53436816 is an abundant number, since it is smaller than the sum of its proper divisors (103991104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53436816 is a wasteful number, since it uses less digits than its factorization.

53436816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19564 (or 19555 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 53436816 is about 7310.0489738442. The cubic root of 53436816 is about 376.6577065593.

The spelling of 53436816 in words is "fifty-three million, four hundred thirty-six thousand, eight hundred sixteen".